LumaTool
YouTube & Subtitle Tools

Free YouTube and Subtitle Tools

Use free subtitle tools first, then upgrade to the browser extension for real-time YouTube subtitle translation and dubbing.

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YouTube Video ID Extractor

Extract video IDs from watch, youtu.be, shorts, embed, and live YouTube URLs.

Video & Subtitle Tools Ready Local Processing No Upload Use Now Y

YouTube Transcript Helper

Extract a YouTube video ID and generate watch, embed, thumbnail, and timedtext reference links.

Video & Subtitle Tools Ready Local Processing No Upload Use Now S

SRT to VTT Converter

Convert SRT subtitle files to WebVTT locally in your browser.

Video & Subtitle Tools Ready Local Processing No Upload Use Now V

VTT to SRT Converter

Convert WebVTT captions to SRT subtitle format locally.

Video & Subtitle Tools Ready Local Processing No Upload Use Now S

Subtitle Cleaner

Clean subtitle text, remove tags, normalize whitespace, and keep cue timing.

Video & Subtitle Tools Ready Local Processing No Upload Use Now S

Subtitle Time Shifter

Shift SRT and VTT subtitle timings forward or backward locally.

Video & Subtitle Tools Ready Local Processing No Upload Use Now S

Subtitle Word Counter

Count subtitle blocks, words, characters, duration, reading speed, and longest lines.

Video & Subtitle Tools Ready Local Processing No Upload Use Now S

Subtitle Translator

Parse SRT/VTT blocks, prepare translation JSON, edit translated text, and export subtitle files.

Video & Subtitle Tools Ready Local Processing No Upload Use Now T

Text to Speech Preview

Preview local browser speech voices for short text and subtitle lines.

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Subtitle workflow

  1. Extract or prepare YouTube video and caption references.
  2. Clean subtitle text before editing or translation prep.
  3. Convert between SRT and WebVTT formats locally.
  4. Adjust timing, count words, and estimate reading speed.
  5. Preview browser speech voices or move to the extension workflow.

Reliable today

  • YouTube Video ID Extractor works with common YouTube URL formats.
  • SRT / VTT conversion, subtitle cleanup, word counting, and timing shifts run locally in the browser.
  • Subtitle Translator prepares editable translation files without pretending to call an automatic translation API.

Workflow boundaries

  • YouTube Transcript Helper prepares video IDs and caption-related reference links; it does not promise guaranteed transcript downloads.
  • TTS Preview depends on browser voices available on your device.
  • Use the browser extension page when subtitle detection, translation, or dubbing needs to happen directly on YouTube.
Featured Extension

YouTube Translator & Dubbing Extension

Use the free subtitle tools today and follow the extension page for on-page YouTube subtitle translation and dubbing as it becomes available.

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